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Finding the Fourth Proportional to 122,494.44, 169,040.34 and 68,779.56

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Solution

The fourth proportional to 122,494.44, 169,040.34 and 68,779.56 is: 94,914.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,494.44 : 169,040.34 = 68,779.56 : x
  2. Step 2: Convert to fraction form
    122,494.44/169,040.34 = 68,779.56/x
  3. Step 3: Cross multiply
    122,494.44x = 169,040.34 × 68,779.56
  4. Step 4: Simplify right side
    122,494.44x = 11,626,520,207.45
  5. Step 5: Solve for x
    x = 11,626,520,207.45/122,494.44
  6. Step 6: Final answer
    x = 94,914.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.